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USA: Edwin Howard Armstrong (1890-1954), electrical engineer and radio inventor, c. 1925 by
Trevor Baylis, Inventor of a Radio Powered by Muscle, Dies at 80 - The New York Times
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Il vero inventore della radio : Gualandi, Lodovico, Gualandi, Lodovico: Amazon.de: Bücher
Who is The First And True Inventor of Radio? History of Radio in India (1924 - Present). - Reader Shelf
Alexander Popov Inventor of Radio (Men of Russian Science) - Radovsky, M: 9780898753073 - AbeBooks
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Guglielmo Marconi – Wikipedia
Wind-up radio inventor Trevor Baylis dies aged 80
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Who Invented Radio: Guglielmo Marconi or Aleksandr Popov? - IEEE Spectrum
USA: Edwin Howard Armstrong (1890-1954), Elektroingenieur und Funkerfinder demonstriert seinen superregenerativen Empfänger, New York, 1922
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